Sandstones generally make good aquifers, while finer-grained mudstones are typically impermeable.
砂岩通常是良好的含水层，而细粒泥岩通常是不透水的。
Beneath this active layer is a second layer called "permafrost", which is frozen all year around, and is impermeable to water.
在这一活跃层下面，是被称为“多年冻土”的第二层，终年冻结，不透水。
The canoe is made from an impermeable wood.
该独木舟用防水木材制成。
Clothing that is impermeable to water prevents the evaporation of sweat from the skin.
穿着不透水的衣服会阻碍体表汗液的蒸发。
The landfill sits on a natural foundation of London clay which is more or less impermeable.
垃圾掩埋场以伦敦黏土为天然地基，其防渗效果极佳。
Rocky or impermeable sites should be avoided.
多岩石和不具渗透性的地点应当避免。
Thus clays and shales tend to be impermeable.
因此粘土和页岩就往往不透水。
Thus clays and shales tend to be impermeable .
因此粘土和页岩就往往不透水。
Cover work surfaces with disposable impermeable materials.
用一次性防渗透材料覆盖工作台面。
The impermeable layer has aged, we must find someone to repair it.
渗层已经老化，要请人来修理了。
Thin layers of other impermeable materials are found in nature, too.
在自然界中也发现有其他非渗透性薄层物质。
The measure of impermeable concrete construction is briefly introduced.
简要介绍提高混凝土抗渗性的措施。
Do not cover the mower with impermeable materials - such as plastic sheets.
不要用塑料布等不透水材料覆盖割草机。
It is observed that the crack impermeable model can be used under some condition.
结果表明，裂缝不可渗透的边界模型在一定条件下可以合理使用。
In certain preferred embodiments, the flexible graphite shell is fluid impermeable.
在某些优选实施方案中，该柔性石墨罩壳是流体不可渗透的。
The distance from the impermeable base to the free surface is a function of space and time.
由隔水底板至自由面的距离是空间和时间的函数。
The accumulation of oil is governed by lateral changes from permeable to impermeable facies.
石油的储集是受从渗透到不渗透的岩相横向变化控制的。
Water may condense under impermeable materials and cause corrosion of metal parts of the mower.
水可能会在不透水的材料上冷凝并造成割草机的金属部件锈蚀。
The fog, in fact, had risen, but still hung above the house-tops, impermeable by any heavenly beam.
雾，实际上已经升起，但仍萦绕于屋顶上，任何一道阳光都不能穿透它。
Shale has a high porosity, but its pores are small and disconnected, so it is relatively impermeable.
页岩有高孔隙度，但其孔隙既小而又不连通，所以它是相对不渗透的。
This employs high-pressure pumps to force the water from brine through a membrane that is impermeable to salt.
这种方法需要用高压泵使海水通过一种不能渗透盐的薄膜，从而淡化海水。
Design of impermeable layer is the central issue; construction should guarantee the design requirements with the highest quality.
设计的核心内容是防渗层，对施工的要求是要确保高质量地满足设计要求。
As primary engineering measure, impermeable wall is applied broadly to reinforcing dike in middle-lower reaches of Yangtze River.
防渗墙作为堤防防渗处理的主要工程措施，在长江中下游堤防加固工程中得到了广泛的运用。
An oil field consists of a reservoir in a shape that will trap hydrocarbons and that is covered by an impermeable or sealing rock.
一个油田由形态上会圈闭油气、并被不渗透的或封闭岩石所覆盖的储集层组成。
Yet the methods of culturing and studying human cells have traditionally been carried out in two dimensions on flat impermeable surfaces.
然而传统的人类细胞培养与研究是在不透水的二维平面上进行的。
The deterioration of the reinforced concrete located long term in impermeable soil environment and below water table may be appeased.
长期处于弱透水性土壤环境中且位于地下水位以下的钢筋混凝土，其受到的侵蚀会相对有所缓解。
When confined aquifer under the bottom of the pit, the foundation excavation will reduce the thickness of overlying impermeable layer.
在基坑底部以下存在承压水层的情况下，基坑开挖减少含水层上覆不透水层的厚度。
The impermeable ability of EC capsule bodies was gradually enhanced with the increase of viscosity grade of EC and concentration of EC solution.
随着制备胶囊体的EC粘度级别的增加和EC溶液浓度的增大，制得的EC胶囊体的非渗透能力逐渐增大。
This paper considers the unsteady state flow behavior in a composite reservoir with an impermeable subregion by using Boundary Element Method (BEM).
本文考虑这种复合油藏的渗流问题并提出边界元(BEM)分析方法。
This paper considers the unsteady state flow behavior in a composite reservoir with an impermeable subregion by using Boundary Element Method (BEM).
本文考虑这种复合油藏的渗流问题并提出边界元(BEM)分析方法。
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